Creating RAID arrays in the EFI shell - White Paper
711747-001  1 
Creating RAID arrays in the EFI shell 
Supported configurations 
When booting to a GPT RAID partition it is necessary to first create the RAID array. The boot array, in addition to data volumes, can 
be created using tools in the EFI shell prior to booting from the install media. 
•  GPT is currently supported by Win7-64 only 
•  Storage controllers must be configured to use the EFI driver. 
•  Controllers: 
•  Z420/Z620: Intel C602 AHCI and SCU controllers 
•  Z820: Intel C602 AHCI and SCU controllers, LSI 2308 controller. 
Enabling the EFI Drivers 
Use the following procedure to enable the EFI driver pre-OS for the different storage controllers. 
Note: These instructions are for v02.07 BIOS. In earlier BIOS versions, the controller settings might be listed separately. 
1.  Press <F10> to enter the BIOS setup menu. 
2.  On the Main menu of the BIOS-based configuration utility, navigate to the Advanced menu item using the arrow keys. 
3.  Navigate to the sub menu item Device Options using the arrow keys and press Enter to access the Device Options menu 
screen. 
4.  On the Device Options screen, navigate to the Mass Storage Option ROMS item using the arrow keys. 
5.  Use the right or left arrow keys to change the selection from Legacy to EFI. 
6. 
Press <F10> twice to go back to the File menu and make sure Save Changes and Exit is highlighted. 
7.  Press Enter to bring up the Save Changes and Exit confirmation. Make sure Yes is selected and press Enter. The 
system will reboot.










